Burner



March 7, 1933. E WALKE ET 1,900,003

BURNER Filed May 31, 1950 2 Sheets-Shet 1 March 7, 1933. E. c. WALKER ET AL.

BURNER 2 Sheets-Sheet Filed May 51, 1930 Invenfion' Earl CZI/cZZ/ er' .fligg slzmm Patented Mar. 7, 1933 UNITED STATES PATENT OFFICE EARL G. WALKER, OF CHICAGO, AND GUSTAF W. ENGS'IROM, OF RIVERSIDE, ILLINOIS, ASSIG-NORS TO INTERNATIONAL HARVESTER"COMPANY, A CORPORATION OF NEW JERSEY Application filed m 31,

.fuel' burner adapted to utilize low grade liquid hydrocarbons;

An object of the invention is to provide.

an improved construction which is comparatively simple and economical to build, and

which is eflicient and durable in operation.

A more specific object is to provide a vaporizingchamber for liquid fuel burners which will withstand the wide variations in temperature to which it is subjected.

' Another object is to provide means for preheating the main burner by a pilot burner g .Another object is to provide means fo controlling the air admitted to the main j between the adjacent curved ends of the castings 3 and overlie the upper parallel edges of burner and to the pilot burner.

These and other objects, which will be apparent, are accomplished by theconstruction andoperation of a burner as will be fully exp wardly pro ecting cars 40, is positioned above plained in the following detailed description.

In the drawings: Figure 1 is a plan view of the burner of this invention;

Figure 2 is a sectional iew on the line c of spaced rings 32 are secured to the ring 2-2 of Figure 1; V t Figure 3 is a sectional viewtaken on the line 33 of Figure l; and v Figure 4 is an enlarged view showing the details of the burner control.

Only such portions of the burner are shown as are necessary to show the-novel features of the device. A housing consisting primarily of a substantially cylindrical portion 1, and a slightly conical bottom portion 2 encloses the pilot burner and the lower portion of the'main burner. A pair ofvaporizing members formed as question-mark shaped castings 3 substantially fill the housing 1 in spaced relation to the Walls and bottom thereof. The casings 3 are oppositely-curved and have the curved portions lying adjacent each other in spaced relation, as clearly shown in Figure 1. On the upper horizontal face the castings are providedwith substantially semi-circular openings 4 which lie in a substantially circular area.

A base plate 5 substantially iannularin BURNER 1930. Serial No. 457,947.

shape is provided with a diametrically e x-' tending partition 6. Said partition forms with the remainder of the plate two semi-circular openings. The plate is placed over the adjacentcurved portions of the castings 3.

with the openings therein in alignment with the openings 4 in the tops of, thecastings. Apertured ears 33 formed on the partition 6 provide means for securely clamping the base plate to similar ears 34 formed'on the caste,

ings 3 by means of bolts 35. i I

At the centers of the arcuate portions of the base plate 5' ears 36, similar to the ears 33, project inwardly and are in alignment with ears 37 formed on the castings 3, one of which can be seen in Figure 3. Bolts 38 secure the ears 36 and 37' together. The partition 6' is wide enough to bridge the space the castings along the openings 4. 7

An annular ring 39, having integral out-- the base plate 5. Cap screws 41, extending through the ears 40, are threaded into bosses 42 formed on the base plate 5, thereby holding the ring 39 securely in position. A series 40 by rods 43 passing through the rings. A conical downwardly projecting member 44 over the top of the rings, is also secured in position by the rods 43. I The rings form a burner grating of a type well known in the art.

Opposite the curved ends, the castings 3 are provided with substantialy parallel extensions 7, which are provided with apertured lugs 8 for attachment to a supporting plate 9. The plate 9 is secured to the housing 1. Openings 10 in the plate 9 registerwith the open ends of the castings 3'. A'fuel and air supplying conduitll is secured to the plate 9. The conduit-.11 is flattened at'the end from a fan issupplied throughthe pipe 13.

A butterfly valve 14 is mounted on 'a shaft 15 in the circular portion of the conduit 11.

pipe 18 which leads to a pilot burner positioned below the main burner. The pilot burner is mounted on the bottom 2 of the housing surrounding the lower portion of the main burner. The pilot burner consists essentially of a small vaporizing chamber 19 to which the inlet pipe 18 is connected and a grating 20 above the chamber 19. Provision is made below the vaporizing chamber 19 for an electric heating coil for preliminary vaporization. A fuel nozzle 31 projects into the connection between the pipes 17 and 18 for supplying fuel to the pilot burner.

A butterfly valve 21 mounted on a shaft 22 is'provided in the air off-take 17 leading to the pilot burner. As best shown in Figure 4, the valves 14 and 21 are operatively connected together. A lever 23 secured to v the shaft 15 is pivotally connected to a link ate the air control valves;

24, which is in turn pivotally connected to a lever 25. The lever 25 is rigidly connected to the shaft 22 of valve 21. A series of holes 26 in the end of the lever 25 provides means for adjusting the relative positions of the valves 14 and 21.

A lever 27 is also rigidly connected to valve shaft 15. A solenoid 28 is mounted adjacent the conduit 14 and is adapted to oper- An extension 29 from thesolenoi'd plunger, not shown, is operatively connected by a link to the lever 27. A link 45, pi-votally connected at one end to the lever 27 intermediate its ends, is pivotally connected at its other end to the plunger 46 of a dash pot 47. The dash pot may be of any conventional construction, being utilized to rovide for smooth operation of the valves.

ilunder pressure is supplied for the main burned through a pair of fuel nozzles 31 extending throughv the walls of the conduit 19 from opposite sides thereof in a position to be substantially centrally located with respect to the openings 10 in the plate 9 leading to the respective castings 3.

In the operation of this burner, air is supplied under pressure through the inlet pipe 13. The pilot burner is normally maintained in operation continuously, fuel oil being sup-- plied throu h the nozzle 31' and air through the pipes 17 and 18. The relative position of the valve 21 controlling the air deliver-.

ing to the pilot burner with relation to the valve 14, which controls the air supplied. to the main burner is such that, when the valve 14 is completely closed, the valve-21 remains essary amount of air to the pilot burner. It will be understood that, when the main valve 14 is closed, the pressure in the air supply pipe 13 will be much higher than when the valve 14 is open. It is, therefore, necessary to have the two valves connected together in such a manner that, as the valve 14 is opened, thereby reducing the pressure of the air supply, the valve 21 will also be opened to lessen the resistance in the oil-take 17 and to supply a sufiicient amount of air'to the pilot burner to maintain its continuous operation. It is also necessary that air may not be supplied to the pilot burner at too high a pressure, as, in that case, the burner might be eX- tinguished by the excess pressure.

Fuel is supplied under the desirable pressure to the nozzles 31 and to the fuel nozzle 31 in the off-take 17 leading to the pilot burner. The atomized oil is carried along with the air stream through the castings 3 which serve as vaporizing chambers for the oil. The two streams of combustible mixture are delivered vertically through the openings in the top of the castings 3, and the homogeneous mixture is delivered through the burner grating 32, after which combustion takes place.

It is to be understood that this invention relates particularly to the peculiar construe tion of the elements making up the burner and to the associated elements for supplying air and fuel thereto and for effecting combustion. for controlling the supply of fuel and air is disclosed and claimed in the copending application Serial No. 457,874 filed May 31, 1930.

lows:

1. A burner comprising a burner grating, a base plate for said grating having a pair of substantially semi-cylindrical openings The particular means and method l/Vhat applicants desire to claim is as fol;

therethrough positioned adjacent each other, i

an air supply conduit, and a pair of curved hollow vaporizing members communicating with the openings in the base plate and with the air supply.

2. A burner comprising a burner grating,

4. A burner comprising a burnergrating,

65 opened a sufficient amount to supply the neca base plate for said'grating having a pair of openings therethrough, an air supply conduit, and a pair of hollow vaporizing members communicating with the openings in the base plate and with the air supply conduit, said members having substantially parallel portions communicating with the air conduit and oppositely curved portions communicating with the openings in the base plate.

5. A burner comprising a burner gratingf,

a base plate for said grating having a pair 0 openings therethrough, an air supply conduit, and a pair of hollow vaporizing mem-- bers communicating with the openings in the base plate and with the air supply conduit said members having substantially parallel open end portions communicating with the air conduit and oppositely curved dead end portions, said portions being provided on their horizontal faces with openings for communicating with the openings in the base plate.

6. A burner comprising a pair of hollow question-mark shaped members positioned with their straight ends lying together, an air supply conduit communicating with said ends, the curved ends of said members lying in spaced relationship with openings on the upper horizontal faces, a burner base plate secured to the members and having openings therethrough mating with the openings in the members, a burner grating secured to said base plate, and means for supplying air and fuel to said burner in regulated amounts.

7 A burner comprising a pair of hollow question-mark shaped members positioned with their straight ends lying together and substantially parallel, an air supply conduit communicating with the parallel ends of said members, the curved ends of said members lying in spaced relationship with openings on the upper horizontal faces, said openings being substantially semi-circular and lying in a substantially circular area, a'burner base plate secured to the members and having openings therethrough mating with the openings in the members, a burner grating secured to said base plate, a pilotburner p0- sitioned under the hollow members whereby said members are initially heated, and means for supplying air and fuel to said burners in regulated amounts.

In testimony whereof we afiix our signature.

EARL C. WALKER. GUSTAF W. ENGSTROM. 

